Congrats and glad you had fun! I would highly recommend looking at the Dixie south and then go along Lakeshore the entire way. I've taken it before and it's not a lot of lights until you get to the CNE but even then it's not too busy.
Another option is to ride along Evans Avenue, or even Birmingham until the end (Royal York) go South to Lakeshore and then follow that until you get downtown.
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